Visualize EG

Article summary

The Visualize EG is a Hewlett-Packard 2D graphics card used in their Series 700 UNIX workstations. The Visualize-EG (project name Graffiti) was the basic graphics card in the era of HP's older B, C and J class workstations (e.g., the B132). In those, EG was the integrated (on the motherboard) display device, although it was also available in GSC and later PCI card form. EG is a descendant of HP's CRX family of graphics devices. Despite being entry level, and offering no hardware 3D features, EG had excellent 2D performance. Specifications (without optional memory upgrade) are: * Resolutions up to 1280 × 1024 at 75 Hz. * 8 planes providing up to 256 simultaneously displayed colours chosen from a true-color palette. * Two 256-entry hardware colour maps. * HP Color recovery technology for simulated True Color using only 8 planes. Optional memory can be used to provide one or the other of these benefits: # Extra resolution – up to 1600 × 1200 or 1200 × 1600 @ 75 Hz. # 16 more planes, giving 24 in total: 16 of these become image planes with the other 8 used as moveable "overlay" planes. Another 2 hardware colormaps become available, providing 2 for the image planes and 2 for the overlay planes. The EG features an accelerated 2D graphics engine that is capable of: * BitBLT featuring boolean and arithmetic raster operations at up to 241 million pixels per second.…

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